From b625102e4715eea57349d0619bd5cc1434bcfc90 Mon Sep 17 00:00:00 2001
From: WANG rui <wangrui@loongson.cn>
Date: Fri, 7 Apr 2023 15:49:36 +0800
Subject: [PATCH] Add support for the loongarch64 architecture

---
 libffi-sys-rs/src/arch.rs | 20 ++++++++++++++++++++
 libffi-sys-rs/src/lib.rs  |  4 ++++
 2 files changed, 24 insertions(+)

diff --git a/libffi-sys-rs/src/arch.rs b/libffi-sys-rs/src/arch.rs
index 0a1e5e4e..4ffe486a 100644
--- a/libffi-sys-rs/src/arch.rs
+++ b/libffi-sys-rs/src/arch.rs
@@ -343,3 +343,23 @@ mod s390x {
 
 #[cfg(target_arch = "s390x")]
 pub use s390x::*;
+
+/// From libffi:src/loongarch64/ffitarget.h.
+/// See: <https://github.com/libffi/libffi/blob/f24180be1367f942824365b131ae894b9c769c7d/src/loongarch64/ffitarget.h#L47>
+mod loongarch64 {
+    use crate::ffi_abi;
+
+    pub const ffi_abi_FFI_FIRST_ABI: ffi_abi = 0;
+    pub const ffi_abi_FFI_LP64S: ffi_abi = 1;
+    pub const ffi_abi_FFI_LP64F: ffi_abi = 2;
+    pub const ffi_abi_FFI_LP64D: ffi_abi = 3;
+    pub const ffi_abi_FFI_LAST_ABI: ffi_abi = 4;
+    pub const ffi_abi_FFI_DEFAULT_ABI: ffi_abi = ffi_abi_FFI_LP64D;
+
+    pub const FFI_GO_CLOSURES: u32 = 1;
+    pub const FFI_TRAMPOLINE_SIZE: usize = 24;
+    pub const FFI_NATIVE_RAW_API: u32 = 0;
+}
+
+#[cfg(target_arch = "loongarch64")]
+pub use loongarch64::*;
diff --git a/libffi-sys-rs/src/lib.rs b/libffi-sys-rs/src/lib.rs
index e652ce69..89029ed5 100644
--- a/libffi-sys-rs/src/lib.rs
+++ b/libffi-sys-rs/src/lib.rs
@@ -133,6 +133,10 @@ pub struct ffi_cif {
     pub riscv_nfixedargs: c_uint,
     #[cfg(any(target_arch = "riscv", target_arch = "riscv64"))]
     pub riscv_unused: c_uint,
+    #[cfg(all(target_arch = "loongarch64"))]
+    pub loongarch_nfixedargs: c_uint,
+    #[cfg(all(target_arch = "loongarch64"))]
+    pub loongarch_unused: c_uint,
 }
 
 impl Default for ffi_cif {